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| Number | Title | Issue Date |
| 7918922 | Process for removal of hydrogen sulphide, iron pentacarbonyl and nickel tetracarbonyl from a synthesis gas stream The invention provides a process for removal of hydrogen sulphide, iron pentacarbonyl and nickel tetracarbonyl from a feed synthesis gas stream, the process comprising the steps of: (a) removal of hydrogen sulphide and of iron pentacarbonyl by contacting the feed sy... | 04/05/2011 |
| 7308798 | Dehumidification system The present invention relates to dehumidification equipment and more particularly, to a dehumidification system and method for use in hazardous locations. In particular, there is provided a desiccant wheel assembly for use in a dehumidification system. The desiccant... | 12/18/2007 |
| 7264654 | Process and system for the condensation of multi-component working fluids A process and system for condensing a multi-component fluid is disclosed, where the process and system are designed to provide a substantial increase in a heat transfer coefficient during condensation of multi-component fluids resulting in a drastic reduction in siz... | 09/04/2007 |
| 7147689 | Apparatus and method for removing volatile organics from vented gases An apparatus and a method for removing volatile organic compounds from air that is vented from tanks and vessels containing hydrocarbon material. This invention also relates to a self-propelled vehicle on which the apparatus is mounted. ... | 12/12/2006 |
| 7136867 | Metadata format for hierarchical data storage on a raw storage device A system and techniques are described for formatting a persistent storage device to store hierarchical data. According to one aspect of the invention, data structures are established, at a base level of the persistent storage device, for storing a hierarchy of key-v... | 11/14/2006 |
| 7101415 | Methods for regenerating process gas purifier materials A continuous method of producing a process fluid gas from a feed stream that includes the process fluid and impurities. The method includes: (a) providing a first and second vessel, each vessel containing one or more regenerable purifier materials for removing at le... | 09/05/2006 |
| 7073442 | Apparatus, systems and methods for use in three-dimensional printing Apparatus, systems and methods for use in three-dimensional printing are shown and described. Various embodiments of the invention allow for more precise and controlled delivery of heat to achieve interlayer drying; isolation of the working region from the outside f... | 07/11/2006 |
| 7073566 | Ventilation system An apparatus for ventilation systems includes an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. The present invention in particular provides an apparatus whereby, d... | 07/11/2006 |
| 7048779 | Method of removing mercury from exhaust gases of coal fired power plants and associated apparatus A method of removing mercury from a coal fired power plant exhaust gas includes passing the exhaust gas through a bulk particle filter to remove coarse particles, introducing powdered activated carbon into the exhaust gas downstream of the bulk particle filter, intr... | 05/23/2006 |
| 7018447 | Method of cleaning a rotary concentrator A method of cleaning the adsorbent media of a rotary concentrator in-situ while maintaining operation of the concentrator, including directing washing liquid into the sectors in the desorb plenum, then rotating the sectors one full revolution plus at least one secto... | 03/28/2006 |
| 6977007 | Method for separating a gas mixture with a permeation membrane unit A method of separating a gas mixture using a permeation membrane unit, wherein the gas mixture, containing primarily hydrogen and carbon monoxide, is first treated to reduce the level of secondary components to lower than 100 molar ppm. ... | 12/20/2005 |
| 6929680 | CO2 separator method and apparatus A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a carbon dioxide absorbent which itself may be in situ recoverable constituent. Separated methane is concentrated into ... | 08/16/2005 |
| 6066192 | Method of treating or recovering gaseous hydrocarbon contained in waste gas A method of treating a gaseous hydrocarbon contained in waste gas by using adsorbent layers of single-tower or multi-tower configuration is characterized in that (1) double-cylinder type or multi-cylinder type adsorption apparatus, in which each adsorbent... | 05/23/2000 |
| 5681369 | Apparatus and method for recovering volatile liquid An apparatus is provided for recovering volatile liquid vapor from an air-volatile liquid vapor mixture. The apparatus includes first and second reaction vessels. Each of these reaction vessel includes a bed of adsorbent having an affinity for the volatil... | 10/28/1997 |
| 5540757 | Method for preconditioning adsorbent A method is described for the preconditioning of an adsorbent, such as activated carbon, prior to charging the adsorbent into a reaction vessel of a vapor recovery system. The method includes the steps of (1) treating the adsorbent in order to establish i... | 07/30/1996 |
| 5472613 | Removing volatile and non-volatile organic in a thick film equilibrium process and device There is disclosed a method for removing a volatile component from a feed or process stream comprising (1) absorbing or adsorbing the volatile component into an absorbent or adsorbent material in an equilibrium process, wherein feed is pumped through a mi... | 12/05/1995 |
| 5390529 | Method for determining heavy hydrocarbons in rock matrices and the apparatus for the purpose A method for separating and analyzing the hydrocarbons, particularly heavy hydrocarbons, contained in sedimentary rocks, comprising: A) loading a sample tube with the sample of sedimentary rock and one or more inert solvents; B) preheating the sample tube; C) ... | 02/21/1995 |
| 5345771 | Process for recovering condensable compounds from inert gas-condensable compound vapor mixtures An improved process for recovering one or more condensable compounds from inert gas-condensable compound vapor mixture is provided. The inert gas-condensable compound vapor mixture is flowed through a first bed of solid adsorbent whereby the condensable ... | 09/13/1994 |
| 5269833 | Process for cleaning a stream of crude gas or waste gas charged with hydrocarbon vapors resulting in recovery of the hydrocarbons The invention relates to a process for cleaning a stream of crude gas and/or waste gas charged with hydrocarbon vapors resulting in recovery of the hydrocarbons. The process consists of adsorption, desorption, and condensation and/or absorption, and the a... | 12/14/1993 |
| 5224350 | Process for recovering helium from a gas stream A subquality nitrogen-rich natural gas stream containing more than 0.1 mol % helium is countercurrently extracted with a lean physical solvent to produce a rich solvent bottoms stream which is flashed twice to produce a methane-rich gas product and a nitr... | 07/06/1993 |
| 5154735 | Process for recovering hydrocarbons from air-hydrocarbon vapor mixtures An improved process for recovering hydrocarbons from an air-hydrocarbon vapor mixture such as the mixture of air and vaporized light hydrocarbon compounds expelled as a result of loading gasoline, benzene or the like into storage tanks and tank trucks. Th... | 10/13/1992 |
| 5069689 | Closed loop pollution control system Many industrial operations generate and release volatile organic compounds. The fumes, frequently mixed with large quantities of air, are collected and sorbed on activated carbon. The spent sorbent is frequently sent to an off-site facility for reactivati... | 12/03/1991 |
| 4861351 | Production of hydrogen and carbon monoxide Substantially pure hydrogen and high purity carbon monoxide are produced and recovered from a methane-rich gas composition, such as natural gas, by subjecting such composition to steam reforming in a first stage at relatively mild conditions, followed by ... | 08/29/1989 |
| 4487614 | Adsorption separation cycle In a fixed-bed vapor phase adsorption cycle for bulk separations wherein the heat front generated by the exothermic heat of adsorption is maintained in the bed either in or behind the mass transfer zone, and is subsequently utilized in the purge desorptio... | 12/11/1984 |
| 4343629 | Process and apparatus for recovering hydrocarbons from air-hydrocarbon vapor mixtures A process and apparatus for recovering hydrocarbons from an air-hydrocarbon vapor mixture such as the mixture of air and vaporized light hydrocarbon compounds expelled as a result of loading gasoline or the like into storage tanks, tank cars and tank truc... | 08/10/1982 |
| 4338101 | Process and apparatus for recovering hydrocarbons from inert gas-hydrocarbon vapor mixtures A process and apparatus for recovering hydrocarbons from inert gas-hydrocarbon vapor mixtures wherein the mixture is caused to flow through a bed of solid adsorbent whereby the hydrocarbons are removed from the mixture and a residue gas stream comprised o... | 07/06/1982 |
| 4333744 | Two-feed pressure swing adsorption process One portion comprising about 30-80% of a hydrogen-containing feed gas having a relatively high carbon dioxide content is preheated to remove a substantial portion of said carbon dioxide therefrom. The thus - preheated stream is passed to a pressure swing ... | 06/08/1982 |
| 4331456 | Process for recovering hydrocarbons with air-hydrocarbon vapor mixtures An improved process for recovering hydrocarbons from an air-hydrocarbon vapor mixture such as the mixture of air and vaporized light hydrocarbon compounds expelled as a result of loading gasoline or the like into storage tanks and tank trucks. The air-hyd... | 05/25/1982 |
| 4276058 | Process and apparatus for recovering hydrocarbons from air-hydrocarbon vapor mixtures An improved process and apparatus for recovering hydrocarbons from an air-hydrocarbon vapor mixture such as the mixture of air and vaporized light hydrocarbon compounds expelled as a result of loading gasoline or the like into storage tanks and tank truck... | 06/30/1981 |
| 4157247 | Corrosion control process This process removes water and at least some of an impurity from a fluid stream which contains a product fluid. The impurity includes a halogenated hydrocarbon. The process includes removing substantially all of the water from the fluid stream to provide ... | 06/05/1979 |
| 4135891 | Purifying exhaust gases containing organic and inorganic materials The invention relates to separately removing organic and inorganic impurities from exhaust gases so that the recovered materials are relatively pure and re-usable, using adsorption on carbon for selective removal of the organics and absorption in aqueous ... | 01/23/1979 |
| 4043770 | Absorption-adsorption system for purifying cryogenic gases A semi-pure gas such as hydrogen containing a minor quantity of a gaseous impurity such as methane, is further purified by: A. passing said semi-pure gas at a temperature substantially above the condensation temperature of said gaseous impurity through a first... | 08/23/1977 |
